Pipe-cover.



S. SCHMAUS.

PIPE COVER.

APPLICATION FILED sEPT.15. 1913.

l 223,835, Patented Apr. 24, 1917.

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SIMON SCHMAUS, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF TO CHARLES J'. DUDLEY, OF NORTH TONAWANDA, NEW YORK.

PIPE-COVER.

Specification of Letters Patent.

Patented Apr. 24, 1917.

Application filed September 15, 1913. Serial No. 789,804.

To all whom z' may concern:

Be it known that l, SIMON SoHMAUs, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful lmprovements in Pipe-Covers, of which the following is a specification.

My invention relates to pipe covers and particularly to that class of cover used lfor covering steam pipe laid underground.

Covers for steam pipes laid under ground are usually constructed of wood built up with staves and provided with slip joints. These soon lose their efficiency due to the warping and shrinkage of the wood, causing the staves to split'and also separate at the seams and the slip joints to become loose, such conditions permitting a large percentage of the heat to escape and causing undue condensation of steam. Moreover, in time the wood becomes rotted and the cover practically useless.

It is the primary object of my invention to produce a cover for this purpose in which the above mentioned objections are entirely obviated, and at the same time providing a cover which is practicable for exposed work as well as embedded or underground work.

Another object of my invention is the production of a cover which is inexpensive, durable, light in weight and moisture proof, and which can be produced by machinery with thc aid of inexperienced labor.

A further object is the production of a cover which, while light, is extremely rigid and in which sections of any desired lengths within certain limits can be made and connected by screw joints.

Still further objects are the production of a sectional cover in which each section is made seamless so that the heat of the steam pipes can in no manner cause openings to appear, as in covers constructed of wooden staves, thus guarding against condensation of steam, and assuring greater heating etliciency under less steam pressure, and to otherwise improve on covers for this purpose now in use.

My invention consists in a cover for steam or other pipes formed of sections with the sections connected by screw joints.

It also consists in a cover formed of seamless sections.

It further consists in a cover constructed of Inoldable material suitably reinforced, and in the novel features of construction, as well as in the arrangement and combination of parts to be hereinafter described and particularly pointed out in the subj oined claims.

In the drawings,-

Figure l is a side elevation of a portion of the cover showing at one end the superposed layers of material from which it is constructed.

Fig. 2 is a central longitudinal section of the cover applied to a pipe.

Fig. 8 is a longitudinal section through the ferrule or mortise end of a cover section.

Fig. 4l is a cross section taken on line z-z, Fig. 2.

Fig. 5 is a. longitudinal section through the male or tenon end of a coverl section.

Fig. 6 is a longitudinal section of a modiied form of foundation tube.

Like numerals of reference refer to like parts in the several figures of the drawings.

The reference numeral 6 designates a steam, hot water or other pipe, and 7 the cover sections which surround the same and are connected by threaded joints 8.

The cover is constructed in sections of the desired lengths and each section has a threaded tenon at one end and a threaded mortise at its other and when placed in position on the pipe, the tenon of one section is threaded into the mortise at the adjacent end of the adjoining section.

Each section is constructed in the main of pulp, suitably reinforced and externally and internally faced in a novel manner so that the dampness of the earth and the heat of the pipes cannot affect the pulp body-pon tion.

9 designates the pulp or other homogeneous bodyeportion molded or otherwise fashioned in cylindrical form having a central longitudinal bore.

Embedded in said body-portion are coarse wire screens l0, 11, or other reinforcingmembers constructed of suitable foraminous material so that in molding, casting, or otherwise forming the section the pulp will be bonded through the openings in said reinforcing members, the latter being spaced apart.

One end of each section is reduced in eX- ternal diameter to form a circular tenon 12 and at the other end of the section the core is enlarged to form a circular mortise 13. By reducing the external diameter to form the tenon, a shoulder 14 is formed and the reinforcing member 10 extends from this shoulder to the extreme opposite end of the section, while the reinforcing member 11 extends from the outer end of the tenon to the mortise at said opposite end.

As a foundation on which to build the pulp body outwardly and inwardly, a sheetmetal or other tube 15 is provided, this tube extends from mortise 13 to shoulder 14 and has secured to its ends threaded metallic sleeves 1G, 17, one lining the mortise 13 and the other facing the tenon 12; each sleeve 17 being adapted to be threaded into the sleeve 16 at the adjacent end of the adjoining section. This foundation tube may also be considered a reinforcing member and by' securing the threaded tenen and mortise sleeves thereto, enables the use of different materials for said sleeve than used for the tube. In some cases the tube 15 may be formed of thick card-board or pulp board.

If desired, the tube may be extended to the ends of the cover section and threaded and sized at opposite ends, as at 18, 19, respectively, Fig. 6, to make threaded joints between the sections. lVhen thus constructed the separate joint sleeves 16, 17 are dispensed with.

It is essential that the pulp within and the pulp around the foundation tube be properly bonded together and for this purpose, said tube is slitted to form openings 2O and outwardly directed lips 21, the latter securely anchoring the tube in the pulp body.

Although the joint sleeves 1, 17, may be secured to the reinforcing foundation tube in any approved manner, l preferably resort lto the means of connection shown in the drawings, in which the sleeves are slitted to form tongues 22. The tongues on the sleeves 16 are directed inwardly while the tongues on the sleeves 17 are directed outwardly through slots 23 in the tubes and then bent to lie against the surface of the tubes, as at 24. In this manner a secure connection is obtained and the inner ends of the sleeves are securely bonded in the ulp.

The bore of each section is provided with a spiral groove 30 extending from end to end, said groove being formed when moldingor otherwise forming the section by using a collapsible core or mandrel, and after forming the spirally grooved bore the surface thereof is coated with concrete or other suitable paint to fill up the pores in the pulp.

The bore of eachsection is flared at one end and is lined with a tin or other suitable sleeve 25, one end of which is extended onto the flared end of the bore, as at 26, to provide a flaring entrance end. This lining provides a smooth interior and when constructed as shown and described the cover j sections can be easily slipped onto the pipe to be covered. When the lining is placed in position in the spirally grooved bore of the cover, the spiral groove thereof is converted into a spiral air space which serves as a nonconductor of heat and cold, preventing the cold affecting the steam causing condensation, and also `preventing the heat ofthe pipe from escaping.

rlhe pulp body is faced with a strip or strips of tar paper 27, which are Wound spirally around the same in several layers, alternately in opposite directions. rlhe strips are placed in contact, edge to edge, and by crossing the successive layers the seams are broken and an air tight facing insured.

In lieu of the strips of tar paper, other suitable material may be used, and after thus far completing the cover, the circumferential surface is coated with tar 2S or some other suitablev substance having the quality of resisting moisture.

Each of Vthe cover sections when completed comprises a reinforcing pulp 'body lined and faced, the whole resulting in a unitary structure resisting moisture and preventing escape of heat, and when the sections are joined, a packing gasket 29 is clamped between the shoulder of each section and the adjacent end of the adjoining section, and by reason of the use of screw joints between the sect-ions, these gaskets are moisture and steam tight when the joints are tightly engaged.

Having thus described my invention, what I claim is,-

1. A cover for steam pipes or the like formed in sections of a moldable substance and having threaded mortise and tenon connections embedded therein.

2. A cover for steam pipes or the like formed in sections of a molded substance, each section having a threaded tenon connection member embedded therein at one end and a threaded mortise connection member embedded therein at its other, the tenons of each section being threaded into the mortise of an adjoining section.

3. A cover for steam pipes or the like formed in sections of molded material, adjoining sections having their adjacent ends abutting and being provided with invisible co-acting threaded portions of different material than said molded material embedded in the latter and fitting one within the other.

4. A cover for steam pipes or the like formed in sections of molded material having mortise and tenon connections, each tenon having a metallic facing and each par (Iii

mortise having a metallic lining, said metallic lining being embedded Within the molded material and the inner ends only of the metallic facings being embedded in said material.

5. A cover for steam pipes or the like formed in sections of a molded substance having tenon and mortise connections, a foundation tube for each section embedded in said substance and having a threaded portion facing the tenon and a thread portion lining the mortise, the tenons of each section entering the mortise of an adjoining section.

6. A cover fo-r steam pipes or the like formed in sections of a molded substance, adjoining sections having threaded mortise and tenon members secured to said molded material, the tenon of one section entering the mortise of the other and the adjacent ends of said sections abutting against each other to conceal said threaded connection.

7. A cover for steam pipes or the like formed of material capable of being molded or otherwise fashioned into cylindrical form and having wire reinfo-rcing members embedded therein and a foundation member between said reinforcing members through which said material is bonded.

8. A cover for steam pipes or the like formed of pulp or other moldable substance and having spaced wire reinforcing members coextensive therewith and a foundation member between said reinforcing members provided with openings and tongues extending from said openings, said reinforcing and foundation members being embedded in said moldable substance.

9. A cover for steam pipes or the like formed in sections, each section comprising a foraminous cylindrical foundation member, a hollow cylindrical body portion formed of a moldable substance in which said foundation member is embedded and having cylindrical metallic reinforcing members embedded therein surrounding and surrounded by said foundation member, screw connections secured to the ends of said foundation member, a metallic lining in the bore of said body portion, a strip or strips wound around said body portion in a plurality of layers with the seams of one layer out of registration with those of another, and a surface coating applied to outer layer of said strip or strips.

10. A cover for steam pipes or the like formed in sections, each section comprising a molded or otherwise cylindrically fashioned homogeneous body having a central longitudinal bore enlarged at one end to form a circular mortise, said body having its other end reduced externally to form a circular tenon, and a cylindrical foundation member embedded in said body and having threaded portions at opposite ends,

one of said threaded portions facing said tenon and the other lining said mortise.

1l. A cover for steam pipes or the like formed in sections, each section comprising a molded or otherwise cylindrically fashioned homogeneous body having a central longitudinal bore enlarged at one end to form a circular bore, said body having its other end reduced externally to form a circular tenon, a cylindrical foundation member embedded in said body and having threaded sleeves at opposite ends, one of said sleeves facing said tenon and the other lining said mortise, and reinforcement embedded in said body between its periphery and said foundation member.

12. A cover for steam pipes or the like formed in sections, each section comprising a molded or otherwise cylindrically fashioned homogeneous body having a central longitudinal bore enlarged at one end to form a circular bore, said body having its other end reduced externally to form a circular tenon, a cylindrical foundation member embedded in said body and having threaded sleeves at opposite ends, one of said sleeves facing said tenon and the other lining said mortise, and a reinforcement embedded in said body between its bore and said foundation member.

13. A cover for steam pipes or the like formed in sections, each section comprising a molded or otherwise cylindrically fashioned homogeneous body ,having a central longitudinal bore enlarged at one end to form a circular bore, said body having its other end reduced externally to form a circular tenon, a cylindrical foundation member embedded in said body and having threaded sleeves at opposite ends, one of said sleeves facing said tenon and the other lining said mortise, and reinforcing members embedded in said body between which said foundation member is located.

14. A cover for steam pipes or the like formed in sections, each section comprising a molded or otherwise cylindrically fashioned homogeneous body having a central longitudinal bore enlarged at one end to form a circular bore, said body having its other end reduced externally to form a circular tenon, a cylindrical foundation member embedded in said body and having threaded sleeves at opposite ends, one of said sleeves facing said tenon and the other lining said mortise, reinforcing members embedded in said body between which said foundation member is located, a lining for said central longitudinal bore, strips covering said body, and a substance coating said strips and serving to exclude moisture.

15. A cover for steam pipes or the like comprising connected sections, adjoining sections being secured together by mortise and tenon connection, each tenon having a threaded metallic 4Jfacing member and each mortise having a threaded metallic lining member.

16. A cover for steam pipes or the like formed in sections of a moldable substance, each section having a central longitudinal bore, a spiral groove formed in the Wall of said bore and a metallic sleeve fitting into said bore to convert said spiral groove into a spiral air space.

17. A cover for steam pipes or the like formed in sections, each section having a central longitudinal bore flared at one end7 and a lining iitting into said. bore and eX- panded over said flared end.

18. Molded cover Sections for covering steam pipes or the like provided With threaded mortise and tenon connections, the tenons of said sections forming shoulders thereon and having threaded'metallie facing members surrounding the same and the mortises of said sections having threaded metallic lining members surrounded by the molded material of the sections, the Inortised end of each section abutting against the shoulder at the adjacent end of an adjoining seetionfto conceal the threaded Connection between said sections.

In-testimony whereof I affix my signature in presence of tWo witnesses.

SIMON SCHMlAUS.

Witnesses:

JAoo- OBnRsT, Jr., EMIL NEUHART.

Copies of this patent may be obtained for five cents each, 'by addressing the Commissioner of Patents. Washington, D. C. 

